Improvement in the oonstbuotion of stills foe oil



1. HUNTINGTON Oil Still.

Patented March 1 2. 1867.

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JOHN HUNTINGTON, OF CLEVELAND, OHIO.

Letters Patent No. 62,750, dated March 12, 18,67.

IMPROVEMENT IN THE GONSTRUGTION 0F STILLS FOR OIL.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN HUNTINGTON, of Cleveland, in the county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Distilling Oils; and I do hereby declare that the following is a full and complete description of the construction and operation of the same, reference being bad to the accompanying drawings, making a part of this specification, in which-- I Figure 1 is a front view of the furnace.

Figure 2 is a vertical longitudinal section.

Figure 3 is a back view.

Figure 4 is a horizontal longitudinal section.

Like letters of reference refer to like parts in the several views.

A, fig. 1, represents the brick-work of the furnace, in which are placed the stills BB. O are the furnace doors, and D the stack. The furnace under B is double-fined, whereas-the furnace under B is single, either of which may be used separately or together, as may berequired. The constructive difference of the two furnaces is shown in fig. 4., in which 13 is the double and B the singled fined. These flues E, fig. 4, are made by running partition walls, F, across the furnace immediately under the stills and upon which the bottom of the stills rests, forming thereby the top of the flues. On referring to fig. 4 it will beseen that the flue E runs directly from the fireplace G across one side of the bottom of the still, as indicated by the arrows, passing thence around the further end of the partition back to the front, thence downward into the ground flue H, and through which into the stack D; also the flue E runs in the same direction on the opposite side of the still-froni the fire-place G' to the ground flue and stack as does the flue E. The flues in the single furnace are constructed by partition walls in the same way. In this furnace they are made to branch oii' to the right and left immediately at the throat of the fire-place I by the partition walls F; thence runningacross the bottom of the sti-ll, as indicated by the arrows; thence down into the ground flue J, through which into the stack. By this arrangement of the tines it will be evident that the heat of the furnace is equally diffused over the entire surface of the bottom of the stills, and thereby'is obtained a more uniform heating of the contents; hence the danger of burning the oil, sofrequent an occurrence in the ordinary furnace, is thus obviated. In connection with the flues above described, there is also arranged an annular flue, which surrounds the bottom of the stills, as shown at K, figs. 1 and 4. The sides of the still form the inner side of the flue; hence the stillis in immediate contact with the heat as it passes from the fire-box around to the stack,first entering this flue at L after passing across the centre of the still B, thence around its entire circumference, as indicated by the arrows, to the flue L, through which it passes into the stack. Thus the lower end of the still is surrounded by a. current of heated air, which may be regulated or entirely cut oil by the damper M, shown also i:i.fig. 8.. The double furnace is'also provided with an annular flue, which is arranged substantially in the same \vay'as that surrounding the still of the single furnace above described. In this the flue is shown as bciugclosedon the inner side by the still. The heat enters at the further side and passes round in the same manner into the stack through the flue N, as in the above instance, which is provided with a damper, M. As above reinarkeih this arrangement of the flue diffuses the heat equally over the entire surface of the bottom of the still, thus equalizing the heat and preventing the oil from being burned, and thus preserving the color'of the oil intact, which cannot be done in the ordinary furnace. The bottom of the still being made to rest upon the partition walls, it is by this prevented from bonding or buckling down upon the fire and burned. By deflecting the heat below the fine and making it pass the third time across the bottom of the stills, all the heat is thereby retained within the compass of tho stills and walls of the samej hence alnrge amount of heat is thereby saved, with a corresponding saving in the consumption of fuel. The annular flue, by allowing the heat to pass entirely around the stills, after passing through the bottom fines increasing the heating surface of the stills, whereby they can be run with less fire and with equally favorable results; also, the stills can beheated up more rapidly bythis arrangement of the lines than in the ordinary furnace, and can be much more rapidly cooled oil by throwing open the furnace doors'and allowing the cool air to pass through and around the several fines; hence the still can be run much ot'tcccr than if heated in the ordinary way. i

What I claim as my improvement, and desire to secure by Letters Patent, is-- The flues E J and damper M or their equivalents, arranged in relation to an annular ilue K, surrounding the base'of the still, and operating conjointly in suchn manner as to be combined with a single erdouble furnace to diifuse a uniform heat without injury tothe oil or burning of the still; and also to induce a current of cold air to reduce the heated oil and still, as specified,

' JOHN HUNTINGTON.

Witnesses:

J. H. BURRIDGE, W. H. BURRIDGE. 

